Name: Suzumushi (Cricket)
Manifestation: Unkown
Command: Cry or Smash his/her Limbs
Family: Kido
Level: Bankai
Sealed Zanpaktou: In its sealed state, Suzumushi looks like a regular katana. Its cross guard is shaped like a tear drop, and at the wide part of the teardrop are several teardrop-shaped holes. Hanging off the tear's tip is a small ring. The ring itself plays a vital role in the activation of Tōsen's Bankai. Additionally, he is unique in that his Zanpakutō was not originally his; it belonged to the unnamed friend who set him on his path. It is unclear how exactly he can wield it, or what implications this has, however it can be implied that since the previous wielder died, the sword was no longer soul-bound.
Shikai: Matains the same shape
Shikai Ability: Suzumushi's regular release command is "Cry" , which has the automatic effect of projecting a high-pitched tone over a wide area, overloading the hearing of anyone in range and knocking them unconscious if their reiatsu is lower then Tosen's if not then they simply are stunned for that post. (This comparatively humane and painless technique fits with Tōsen's self-presentation as a proponent of justice.)
Benihikō, Tōsen's second Shikai Benihikō (Crimson Flying Locusts): Suzumushi's second release command is "Smash His Limbs" ,which changes Suzumushi into its Benihikō form. Suzumushi vibrates momentarily and, after Tōsen moves the blade around him in a circle, a trail appears from the sword's path. The trail turns into hundreds of blades that rain down on his opponents.
Bankai: Maintains its form of a regular katana, though without the small ring.
Bankai Ability: creates a large, black dome centered at Tōsen's location and anchored to the ground with ten rings. Anyone within the dome loses the ability to sense anything around them, what Tōsen called Mumyō (ignorance). The only sense they retain is that of touch. Unlike most Zanpakutō, Tōsen's Suzumushi does not convert itself into the massive dome that it materializes during Bankai. Instead, the dome serves as a separate extention of Suzumushi itself, allowing Tōsen to still wield its sealed form to be used as a weapon while inside the dome, but cannot use its abilities. The technique's main shortcoming is that anyone touching Suzumushi's hilt, not just Tōsen himself, is immune to the dome's effects, so anyone able to grab Suzumushi recovers their senses. Another weakness is that while Tōsen cannot be seen by the enemies subject to his bankai's effect, they can still avoid his attacks and potentially counterattack if they overcome their fear of the darkness.
Techniques:
Will post later